The invention discloses new dihydroiso-coumarin glucoside compounds shown in a formula I, which are extracted and separated from Periplaneta americanna medicinal materials. Through mouse auricle swelling tests, rat granulation tissue hyperblastosis tests and the like, results show that the compounds have effects of resisting inflammation, promoting wounds to heal and the like; and the compounds can be used for preparing medicines for treating inflammation, ulcers, wounds, incised wounds, fistula, burn, scalding and the like, particularly medicines for preventing and treating diseases related to inflammation resistance, promotion of granulation tissue hyperblastosis, wound healing and the like, and have high clinical application value. The invention provides a preparation method for the compounds shown in the formula I.